.bulk_rename {
  width: calc(100% - 20px);
}

.bulk_rename_preview {
  width: 80%;
}

.bulk_button {
  width: 100%;
}

.bulk_preview_header {
  margin-top: 5px;
  margin-bottom: 5px;
}

.bulk_input {
  width: 100%;
  margin-right: 15px;
}

.bulk_preview_label {
  margin-right: 15px;
}

.bulk_regexp {
  width: 100%;
}

.bulk_regexp > input {
  color: green;
  padding: 0 28px 0 14px;
  font-size: 20px;
  font-weight: 700;
}

.bulk_regexp:before {
  content: '/';
  top: 2px;
  left: -15px;
}

.bulk_regexp:after {
  content: '/';
  bottom: 5px;
  right: -15px;
}

.bulk_regexp:before,
.bulk_regexp:after {
  color: #000080;
  font-size: 30px;
  /*background-color: #cccccc;*/
  display: block;
  /*text-align: center;*/
  position: absolute;
}